Cup holder for crutch



FIG. 1 is a perspective top front right view of a cup holder for a crutch, showing my new design;

FIG. 2 is a front elevation view, with the rear elevation view being identical thereof;

FIG. 3 is a left elevation view, with the right elevation view being identical thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

CLAIM The ornamental design for a cup holder for a crutch, as shown and described. 